Rio de Janeiro vs Buenos Aires

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Rio de Janeiro edges ahead as the better destination in July. Rio de Janeiro offers 8 hours of daily sunshine with only 7 rain days, while Buenos Aires sees 7 sunshine hours and 7 rain days.

Rio de Janeiro sits in the comfortable travel range at 25°C. Buenos Aires is cooler at 13°C.

For travelers who prioritize dry weather, both cities are equally dry in July. Rio de Janeiro receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Rio de Janeiro reaches an average high of 25°C (77°F) and drops to 17°C (63°F) at night during July. The daily temperature range is 8°C, meaning moderate variation throughout the day.

Buenos Aires averages 13°C (55°F) for the high and 8°C (46°F) for the low, with a daily range of 5°C. There is a notable 12°C gap between the two cities, so expect a very different feel.

Both cities are in the Southern Hemisphere, so they share the same seasonal pattern in July.

Rio de Janeiro receives approximately 49 mm of rainfall across 7 rain days during July. Rain is occasional, so a light rain jacket should suffice.

Buenos Aires sees 75 mm over 7 rain days. Both cities are equally rainy this month.

Humidity also differs: Rio de Janeiro averages 78% while Buenos Aires sits at 70%. Rio de Janeiro will feel muggier, especially at higher temperatures.